Lattice work and means for supporting the same



w. G. PURDY ET AL Dec. 2, 1930.

LATTICE WORK nun MEANS FOR SUPPORTING THE sun:

2 Sheets-Sheet 1 Filed March 30, 1929 Fig.

ILL

Dec. 2, 1930. w. G. PURDYET AL 4 6 LATTIGE WORK AND MEANS FOR SUPPORTING THE SAME 7 Filed March 50. 1929 2 Sheets-Sheet 2 Fig.5"

Patented Dec. 2, 1930 rare" PATENT oFFrcr.

WILLIAM a. runny nnn Jonn r. srnox,'on TIrnIn'orIIo, i

Application filed March 30, 1929. Serial No. 351,321.

This invention relates to lattice work, with special reference to the formation of the strips or bars constituting the same and sup-1 porting means therefor. In its present em-.

bodiment, the lattice is shown as used in connection with poster and bulletin panels but obviously the invention is not limited to such use.

One of the objects of the invention is to provide a lattice which may be economically manufactured, preferably from a single piece of sheet metal, and which may be quickly and securely mounted on a frame or bars provided for that purpose.

unc-tion with a lattice of this kind, a further object of the invention is to provide improved means for mounting and supporting the same with reference to the structural steel work commonly used to support poster or bulletin panels which are made up of steel panel sections.

In describing in detail the preferred form of the invention, reference will be had to the accompanying drawings, in which Figure 1 is a perspective view of a lattice constructed in accordance with the invention.

Figure 2 is a horizontal section of a portion of the lattice on an enlarged scale. Figure 3 is a vertical section thereof.

30 Figure 4 is an enlarged perspective view of one of the brackets for supporting the lattice.

Figure 5 is a similar view of another of I the supporting brackets.

Figure 6 is a side elevation of one of the brackets secured to an upright, and with the supporting channel bar shown in section.

Figure 7 is a similar view of one of the other brackets.

" In the form shown in the drawings, the lattice work is stamped from a single piece of sheet metal which is bent to form a series of parallel vertical channels 10 with side flanges 11, the side flange of one channel being connected to the opposed flange of the next channel by a series of webs 12. These webs are formed in the shape of horizontal channel portions running transversely to the ,4 channels 10 and having side flanges 13 bent rearwardly, the surplus metal between the In con- 1 webs being removed. Thus a lattice is formed from a single piece of sheet metal which presents the general appearance of vertical channel bars 10 with the channel portions 12 disposed horizontally between the channels 10 and in rear of the same. In mounting the lattice work, a. channel bar 14 is securedwithin the aligned channel portions 12 near the top of the lattice and a similar channel bar l5is secured within the aligned channel portions 12 near the bottom of the lattice. These channel bars 14 and 15 extend beyond theends. of the lattice and are adapted to be secured at each end by means of suitable clamps to an upright wooden post or angle bar 16 such as is commonly used to support poster and bulletin panels. These panels are preferably made of metal sections secured together in a suitable frame supported by uprights, such as are shown at-16, and the lattice is mounted at the lower edge of the poster or bulletin panel.

The upper channel bar 14 is secured at each end by a bracket 17, which is secured to the upright 16 by a bolt 18 or the like. The bracket 17 is preferably formed with an elongated slot 19 for receivingthe bolt, so that the bracket may be adjusted vertically to corre spond to the position of the horizontal channel portions 12 to which bar 14 is secured. The bracket 17 is formed with a horizontal seat 20 extending underneath the upper flange of the bar 14, and co-operating with this seat is a clamping member 21 which is se- 35 cured to the bracket and is formed with a down turned lip 22, adapted to engage the corner edge of the bar 14.

Similarly the end of the lower channel bar 15 is secured to a bracket 23, which is secured to the upright 16 by means of a bolt 24 or the like. The bracket 23 is also preferably provided with an elongated slot 25 for receiving the bolt so that the bracket may be vertically adjusted to correspond to the position of the lower horizontal channel portions 12. The bracket 23 is formed with a horizontally extending seat 26 on which the lower flange of the bar 15 rests and to which it is secured by a clamping member 28, the end of the seat 109 26 being turned up to form a lip 27 extending about the corner edge of the bar.

As above described, a one piece lattice construction may be manufactured very economically by stamping, and channel bars secured within certain of the horizontal channel portions of the lattice thus formed afford a certain and convenient means of supporting the same, especially when these bars are secured to the uprights which support the poster panel and frame.

It is to be understood, however, that the details of construction may be considerably modified without departing materially from the scope of the invention as claimed.

hat we claim is:

1. A metal lattice consisting of a single piece of sheet metal formed with a series of continuous parallel channels, and Webs connecting the edge of one channel to the adj acent edge of the next channel, each web portion having rearwardly turned side flanges forming channel portions extending "between the continuous channels, transversely thereof and in rear of the same.

2. A metal lattice consisting of a single piece of sheet metal formed with parallel channels having rearwardly turned side flanges, and connecting means between the rear edge of a flange on each of said channels and a rear edge of the adjacent flange of the next channel, the connecting means between each pair of such flanges including a series of webs with openings there between, and flanges turned rearwardly from the edges of the webs to form channel portions extending between the continuous channels, transversely thereof and in rear of the same.

In testimony whereof we have hereunto signed our names to this specification.

lVILLIAM G. PUB-DY. JOHN P. SPECK. 

